def excel(n):
    for i in range(1,n+1):
        for j in range(1,i+1):
            print(f"{j}x{i}",end="\t")
        print()

num=int(input("请输入一个数"))
# for i in range(1,num):
#     for j in range(1,i+1):
#         print(f"{j}x{i}",end="\t")
#     print()
excel(num)